Furnace



Cr A

Patented Juiy 27, 1926i,

' man., .sin sancisce, 11111035115 E RNACE.

muestran ied i111gust14, 192.5. serm '-NO. 50,201.

hatir'e ofthe sh'starieestreated-, as, `for exa1`npie;, the recovery;concentration or redde tion' x'x'fherey itis desired to obtain `abyproduct of `gases ksueh` as CO2 or 'other fumes such fquieksiIver,zinearidk other gaseous p'i'odiiets l; or the treatment for-any purposeof materials requiring furnace-heat' My invention is parteularlyfadaptedfer and isfdesigned or'the treatmerlt'eit suehvr materiais'as have-atende'rieyV te scale, cake t er si'agg'arid'ithas vfor one 'of itsobjects the provision oa furnacey in which simple and 'effective means.lare presentate prevent theealingof the material` uporl the furnaceWallis, andthereby to avoid the heeessitv ott l f spofuti 13 to said'eh-a' her 1s fitted' with" a the Customary forms o'rabbling; Anotherohect isy to subject-the irrateria'l toV arldfadvarrce i'toverthe heatedsi'irfaee in a manner conducive to 'equability of effect.

yiitilifatleti-1er object is to proif'ide :for a vaoimin' tht'eating'Chamber. These and ether objects will hereinafter jbecf'i'meap` parentin the course of the following-cilep-arting from thespirt oit myinvehtieri as 'defined by the claims hereunto appeIrded-- Myfurnace;ioieyfstatech'Consists of a Chamber thereabout; a revolutie Teerwithin said tratirg Chamber; earfrying'members adapted vto lift 'anddr'op the material, te 'adj viie'er it inlet `to d'ifsclhargegadtoyscrape keep clean the outer surface "of e1-,t te@ eeejmpanyiagdrawings,

the l vform "of is s "veeeeai ieligitaainai sea-ener me tmmeeicetn @t"end `with the eoree .ofheat, suehasthe fire box 2,.'andfcommunicatingat its othererd i ivithvthesm'oke stack The -heatirigr ve501' tdbe'lfinits best arrangement' isf. journaled etits, end: -eemreoftions inbearing-s iiridioated at 4;, adap'tihg it pose it isl povided Wthfa'gear5 meshing 1withiapinon 6 fona drive shaft fa.,

from it is/ af metal-life silei 8 the. spaee :bel-

tween the :shell andflueA 'being Athe treating chamber, indicated by 91.The eorme'etion between the sheli arld'iue asy indicatedY by the s-tuingboxes l0 is such that thetreatingy Chamber 9 is fluid tight, in order.'to establish and maintain therein vaeuurrr `or.` partial vacuum, forwhich .purpose there is a e011.-

uso, i'or preservingr eaiid vaeumfthe :feed

Afluid tightl valve A14e, the 'discharge pipe"` 15' is 'titted 4 with ar'similar fiid tight vaiv'e. 16. v`Vithin the heating chamber` andextendit'g between` the feed. and. discharge thereof is Aa revohrhiereel of' Whieh 17 'indicates its two heads.,l These heads `arie fittedWith gears "1 8 meshing with pinions 19y on the "drive l shaft 7',Wherebythereel lisrotated''a-bzeit i `the.heat1in-fig dire l as anaiie.. Betweenfthe reel heads -17 and Cer-rieti by the youterfporliuiarseries of lifting and 'outer scraping rails 20. .Theyinner edges`ofthese rails arev material from eakirig;v i f 1 a 'Carried by theinner portions of the reel heads i7 `and prferehly iiielixed fat'aria-Hgh to the ree-i` airi'syas indie'ated. in (Figi. 2;, 'is

annular series. off scraper; rails @Lft-.hef

vand theiroirter edges -lie in Close rel'ationte i l theirmerlsurfaee'of the Shell 8 to lscrape-the v`Said suraee and .prevent Y imi'er edgesof which lie eiosettofthe outery surface ofthe `heating?flue and serveto r .the mum @geraete 1311? a maxi secured. Also by the action of therails 2O and 2l, the material is kept Well scraped off.' from all nailsof the treating chamber. The fluid tight relation of the several partspermits the application of a vacuum elliect to the heating chamber incase, by reason of the nature of the material or of the resu bought,such effect is indicated.

l claim l.V A furnace comprising a heating flue;

means for passing a heating medium through said flue a shell enveloping,spaced from, and forming a treating chamber around ksaid heating flue;and a rotatable reel of rails Within and extending the length of saidchamber, said rails being positioned and operating with relation to theinner surface of the shell and the outer surface of the heating flue toscrape said surfaces free of the mate ial.

2. A furnace comprising a heating flue; means for rotating said flueupon its axis; means for passing a heating medium through said flue; ashell enveloping, spaced from, and forming a treating chamber aroundsaid heating flue; and a reel of rails Within and extending the lengthof said chamber, and independently rotatable about the flue, said railsbeing positioned and operating with relation to 'the inner surface ofthe shell and the outer surface of the heating flue to scrape saidsurfaces free of the material.

3. A furnace comprising a heating flue; means Vfor passing a heatinglmedium through said flue; a shell enveloping, spaced from, and forminga treating chamber around said heating flue; means for feeding materialto one end of said chamber; means for discharging it from the other end;and a rotatable reel of rails Within and extending` the length of saidchamber, said rails being disposed at an angle to the reel axis andpositioned and operating to advance the material through the chamber andto scrape said material from the inner surface of the shell and theouter surface of the heating nue.

l. A furnace comprising a heating flue; means for rotating vsaid flueupon its axis; means for passing a heating medium through said flue; ashell enveloping, spaced. from, vand forming a treating chamber aroundsaid heating flue; means for feeding material to one end of saidchamber; ymeans for discharging it from` the other end; and a reel ofrails Within and extending the length of said chamber and independently-rotatable about ythe flue,

'p said railsl being disposed at an angle to the freel axis andpositioned and operating to advance the materialY through the `chamber"andto scrape said material frein the inner'surface ofthe shell andtheface of the heatngflue,

outer sur- 5. A furnace comprising a heating flue;

means for passing a heating medium through said flue a shell enveloping,spaced from, and forming a treating f scrape material lfrom the innersurface of .the shell.

6. A furnace comprising a heating Hue; means for rotating said flue uponitsfaxis;

means for passing a heating medium through said flue a shell enveloping,spaced from, and forming a treating chamber around said heating flue;and an independently rotatable -reel Within and ex-k tending the lengthof said` chamber said reel carrying an inner annular series of rails theinner edges of which are adapted to scrape material from the outersurface of the heating flue, and also carrying an outer annular seriesof rails, the inner edges of which are flanged to lift and drop thematerial, the outer edges of said rails being adapted to scrape materialfrom the inner surface of the shell.

'7. A furnace comprising a heating flue; means for passing a heatingmedium through said flue; a shell enveloping and spaced from said-flueWith fluid tight connections forming a closed treating chamber aroundthe flue; means for effecting and maintaining a vacuum in said chamber;and a rotatable reel of rails Within and extending the length of saidchamber, said rails being positioned and operating With relation to theinner surface of the shell and the outer surface of the heating flue toscrape said surfaces free of the material.

8. A furnace comprising a heating flue; means for rotating said flueupon its axis; means for passing a heating medium through said flue; ashell enveloping and spaced from said flue with fluid tight connectionsforming a closed treating chamber around the flue; means for effectingand maintaining a vacuum in said chamber; and a reel of rails Within andextending the length of said chamber, and independently rotatable aboutthe flue, said railsvbeing positioned and operatingvvvith relation tothe inner surface of the shell and the outer surfaceof the heating flueto scrape said A'surfaces free of the material.

In testimony whereof I .have signed myv naine to this specification.

Hniinrw. CARR;

